/*
 * Created on May 6, 2003
 * To change the template for this generated file go to
 * Window>Preferences>Java>Code Generation>Code and Comments
 * Copyright 2003 Joseph Barnett
 * This File is part of "one 2 oh my god"
 * "one 2 oh my god" is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * Free Software Foundation; either version 2 of the License, or
 * your option) any later version.
 * "one 2 oh my god" is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
 * GNU General Public License for more details.
 * You should have received a copy of the GNU General Public License
 * along with "one 2 oh my god"; if not, write to the Free Software
 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
 */
package org.mult.daap.client.daap.request;

import java.io.IOException;
import java.util.ArrayList;

import org.mult.daap.client.daap.DaapHost;
import org.mult.daap.client.daap.Database;

import android.util.Log;

/**
 * @author jbarnett
 * @created
 */
public class DatabasesRequest extends Request {
   private class FieldPair {
      public FieldPair(int s, int p) {
         size = s;
         position = p;
      }

      public int position;
      public int size;
   }

   private ArrayList<Database> mDatabases;
   private ArrayList<FieldPair> mlclList;
   private ArrayList<FieldPair> mlitList;

   public DatabasesRequest(DaapHost h) throws BadResponseCodeException,
         PasswordFailedException, IOException {
      super(h);
      mlclList = new ArrayList<FieldPair>();
      mlitList = new ArrayList<FieldPair>();
      mDatabases = new ArrayList<Database>();
      query("DabasesRequest");
      readResponse();
      process();
   }

   protected String getRequestString() {
      String ret = "databases?";
      ret += "session-id=" + host.getSessionID();
      ret += "&revision-number=" + host.getRevisionNumber();
      return ret;
   }

   protected void addRequestProperties() {
      super.addRequestProperties();
   }

   protected void process() {
      mlclList = new ArrayList<FieldPair>();
      mlitList = new ArrayList<FieldPair>();
      if (data.length == 0) {
         Log.d("Request", "Zero Length");
         return;
      }
      offset += 4;
      offset += 4;
      processDatabaseRequest();
      parseMLCL();
   }

   public void processDatabaseRequest() {
      String name;
      int size;
      while (offset < data.length) {
         name = readString(data, offset, 4);
         offset += 4;
         size = readInt(data, offset);
         offset += 4;
         if (size > 10000000)
            Log.d("Request", "This host probably uses gzip encoding");
         if (name.equals("mlcl")) {
            mlclList.add(new FieldPair(size, offset));
         }
         offset += size;
      }
   }

   /* Creates a list of byte arrays for use in mLIT */
   protected void parseMLCL() {
      for (int i = 0; i < mlclList.size(); i++) {
         processContainerList(mlclList.get(i).position, mlclList.get(i).size);
      }
      parseMLIT();
   }

   protected void parseMLIT() {
      for (int i = 0; i < mlitList.size(); i++) {
         processmLitList(mlitList.get(i).position, mlitList.get(i).size);
      }
      mlitList = null;
      mlclList = null;
   }

   /* get all mlit in mlclList */
   public void processContainerList(int position, int argSize) {
      String name;
      int size;
      int startPos = position;
      while (position < argSize + startPos) {
         name = readString(data, position, 4);
         position += 4;
         size = readInt(data, position);
         position += 4;
         if (name.equals("mlit")) {
            mlitList.add(new FieldPair(size, position));
         }
         position += size;
      }
   }

   public void processmLitList(int position, int argSize) {
      String name = "";
      int size;
      int startPos = position;
      Database d = new Database();
      boolean bMiid = false;
      boolean bMinm = false;
      while (position < argSize + startPos) {
         name = readString(data, position, 4);
         position += 4;
         size = readInt(data, position);
         position += 4;
         if (name.equals("miid")) {
            bMiid = true;
            d.id = readInt(data, position);
         } else if (name.equals("minm")) {
            bMinm = true;
            d.name = readString(data, position, size);
         }
         if (bMiid == true && bMinm == true) {
            mDatabases.add(d);
            bMiid = false;
            bMinm = false;
            break;
         }
         position += size;
      }
   }

   public ArrayList<Database> getDbs() {
      return mDatabases;
   }
}
